<template>
  <div>
    <div class="search">
      <input v-model="keyword"
             class="search-input"
             type="text"
             placeholder="输入城市名或拼音" />
    </div>
    <div class="search-content"
         ref="search"
         v-show="keyword">
      <ul>
        <li class="search-item border-bottom"
            v-for="item of list"
            :key="item.id"
            @click="handleCityClick(item.name)">
          {{item.name}}
        </li>
        <li class="search-item border-bottom"
            v-show="hasNoData">
          没有找到匹配数据
        </li>
      </ul>
    </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll"
import { mapMutations } from "vuex"
export default {
  name: "CitySearch",
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: "",
      list: [],
      timer: null
    }
  },
  computed: {
    hasNoData () {
      return ! this.list.length
    }
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (! this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > - 1 ||
              value.name.indexOf(this.keyword) > - 1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push("/")
    },
    ...mapMutations(["changeCity"])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.search)
  }
}
</script>

<style lang="stylus" scoped>
@import '../../assets/styles/varibles.styl'
.search
  height 0.72rem
  padding 0 0.1rem
  background $bgColor
  .search-input
    box-sizing border-box
    width 100%
    height 0.62rem
    padding 0 0.1rem
    line-height 0.62rem
    text-align center
    border-radius 0.06rem
    color #666
.search-content
  z-index 1
  overflow hidden
  position absolute
  top 1.58rem
  left 0
  right 0
  bottom 0
  background #eee
  .search-item
    line-height 0.62rem
    padding-left 0.2rem
    background #fff
    color #666
</style>
